Leakage Suppression in Pulse-Shaped OTFS Delay-Doppler-Pilot Channel Estimation

被引：13

作者：

Pfadler, Andreas ^{[1
,2
]}

Szollmann, Tom ^{[3
]}

Jung, Peter ^{[3
,4
]}

Stanczak, Slawomir ^{[2
,3
]}

机构：

[1] Volkswagen Commercial Vehicles, Autonomous Driving, D-38436 Wolfsburg, Germany

[2] Tech Univ Berlin, Network & Informat Theory, D-10623 Berlin, Germany

[3] Fraunhofer Heinrich Hertz Inst, Wireless Commun & Networks, D-10587 Berlin, Germany

[4] Tech Univ Berlin, Commun & Informat Theory, D-10623 Berlin, Germany

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2022年 / 11卷 / 06期

关键词：

Delays; Doppler shift; Kernel; Channel estimation; Time-frequency analysis; Interference cancellation; Convolution; Delay-doppler; channel estimation; OTFS;

D O I：

10.1109/LWC.2022.3160657

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this letter, we propose a novel channel estimation scheme with leakage suppression for orthogonal time frequency and space (OTFS) modulation. In OTFS, data and pilot symbols are placed in the delay-Doppler (DD) domain and spread over the time-frequency (TF) domain. This increases the achievable accuracy in estimating linear time-varying (LTV) channels. Unfortunately, leakage effects reduce the measurement precision significantly. Therefore, we propose a scheme that exploits smoothness regularization in TF to suppress the leakage observed in the DD domain. It allows us to improve the channel estimation accuracy while reducing signaling overhead.

引用

页码：1181 / 1185

页数：5

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